Wash the fillet and pat dry. Peel onions and cut into fine rings. Peel and wash the carrots, cut them in half lengthwise and cut them into diagonal pieces. Wash and chop marjoram
Heat the oil in a coated pan. Fry the fillet for 5-6 minutes on each side. Add the onions and marjoram after about 5 minutes and fry them together
In the meantime, cover the carrots and steam them for about 5 minutes in a little boiling salted water
Season fillet and onions with salt and pepper. Deglaze with vinegar and 2-3 tablespoons of water. Bring to the boil and simmer for 1-2 minutes. Season with salt, pepper and sugar. Drain the carrots. Cut the fillet open. Arrange everything. Add the bread rolls.
Chicken filet is ideal for those who eat low-fat and low-cholesterol, but do not want to do without meat. Because 100 g only contain about 50 mg cholesterol